"I just don't see how they make up for what's happened in the past four years in North Carolina," said John Davis, a longtime North Carolina political analyst.
Obama's campaign says it will mobilize a network of campaign workers and volunteers that never shut down after the 2008 election. The campaign has 50 offices across the state, more than double Romney's, and registered 30,000 new voters last month.
Democrats also are promoting early voting, which starts in North Carolina on Oct. 18. Obama would have lost North Carolina in 2008 based on Election Day voting alone, but his overwhelming advantage in early voting was decisive.
Associated Press writers Gary Robertson in Charlotte, N.C, and Thomas Beaumont in Des Moines, Iowa contributed to this report.
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